Breathing Exercises for Long COVID Recovery: What the Evidence Actually Shows

Updated September 2026 · ~7 min read

Breathing exercises are a reasonable, low-cost part of long COVID recovery, and the best current evidence supports them for improving walking capacity, lung function, and quality of life, but not for reducing fatigue. In a 2025 systematic review and meta-analysis of 37 randomized controlled trials, the breathing-exercise subgroup improved on the 6-minute walk test, FEV1, FVC, and quality of life, while showing no significant benefit for fatigue.

That is a useful, honest result, and it comes with real caveats. Breathing practice is not a cure for long COVID, and the researchers who ran that analysis are clear that it works best as one component of a broader rehabilitation program, not as a standalone fix. This post walks through what the evidence says, which breathing patterns are typically taught, and where the science is still thin.

What does the research say about breathing exercises for long COVID?

The most relevant recent evidence is Li et al. 2025, published in Therapeutic Advances in Respiratory Disease (DOI 10.1177/17534666251323482). It is a systematic review and meta-analysis of 37 randomized controlled trials covering 3,363 participants with post-COVID conditions.

The headline finding is about pulmonary rehabilitation as a whole. Across the trials that reported it, rehabilitation improved 6-minute walk distance by a mean difference of 77.95 meters (95% CI 50.91 to 104.99). The 6-minute walk test measures how far a person can walk on a flat surface in six minutes, and it is a standard, functional way to track exercise capacity after respiratory illness. An improvement of roughly 78 meters is meaningful for someone whose baseline has been limited by breathlessness and deconditioning.

Two things about that number matter, and we will not gloss over them. First, the 77.95 meter figure comes from the subset of trials that actually reported the 6-minute walk test, not from all 37 trials. Second, "pulmonary rehabilitation" in these studies usually means a multicomponent program: aerobic conditioning, strength work, and breathing exercises together, not breathing exercises alone.

Do breathing exercises specifically help, or is it the whole rehab program?

This is the honest question, and the review looked at it directly by analyzing a breathing-exercise subgroup.

Within that subgroup, breathing exercises improved:

• 6-minute walk test (walking capacity)
• FEV1 (forced expiratory volume in one second, a measure of how much air you can force out in the first second of a hard exhale)
• FVC (forced vital capacity, the total amount of air you can forcibly exhale)
• Quality of life

And here is the part app blogs tend to skip: breathing exercises did not show a significant benefit for fatigue. Fatigue is one of the most common and disabling symptoms of long COVID, so this is an important gap to be honest about. If your main problem is exhaustion rather than breathlessness, the current evidence does not promise that a breathing routine alone will fix it.

The review authors' own reading of the data is that breathing exercises are best combined with multicomponent rehabilitation, strength and aerobic training included, rather than used in isolation. That framing is worth taking seriously, because it comes from the people who read all 37 trials.

Which breathing patterns are used in pulmonary rehab, and why?

Pulmonary rehabilitation programs tend to teach a small set of well-established patterns. Each targets a specific mechanical or physiological problem that shows up after a respiratory illness.

Diaphragmatic breathing. After illness and deconditioning, many people drift into shallow, upper-chest breathing that uses the neck and shoulder muscles and tires them out. Diaphragmatic breathing retrains the breath to be driven by the diaphragm, the large dome-shaped muscle under the lungs, which is the efficient way to move air. It can lower the sense of effort and help reset a dysfunctional breathing pattern. Our guide to diaphragmatic breathing covers the mechanics.

Pursed-lip breathing. Here you inhale gently through the nose and exhale slowly through pursed lips, as if blowing out a candle in slow motion. The pursed lips create a small back-pressure that helps keep the airways open longer during exhalation, which can ease breathlessness and slow the breathing rate during exertion. It is one of the simplest tools for managing the feeling of not being able to get a full breath. See our explainer on pursed-lip breathing.

Paced (slow) breathing. Slowing the breath and lengthening the exhale is a core skill in rehab. A slower, longer exhale nudges the autonomic nervous system toward its calming, parasympathetic side, which can reduce the anxiety and air hunger that often accompany post-COVID breathing difficulty. Structured slow-breathing methods like coherent breathing, which uses even, unhurried breaths at around five to six per minute, are a gentle way to practice this pacing.

The common thread is that none of these are strenuous. They are gentle and low-risk, which is exactly why they fit early recovery when hard exercise may not be tolerated yet.

Is it safe to do breathing exercises with post-exertional malaise?

This deserves its own answer, because it is where "gentle" can still go wrong.

A meaningful share of people with long COVID experience post-exertional malaise, a worsening of symptoms after physical, cognitive, or emotional effort that can be delayed by hours or a day. For those people, pushing too hard, even with something as mild as an intense breathing drill, can trigger a crash.

Breathing exercises are gentle by nature, but pacing still matters. The safe approach is to start small, keep effort low, and stop if symptoms worsen rather than trying to power through. This is a clear case for working with a clinician, a physiotherapist, or a pulmonary rehab program that understands post-exertional malaise, rather than self-prescribing an aggressive routine from the internet.

Breathing practice should feel like it settles you, not like a workout.

What are the limitations of this evidence?

This is the section that matters most, and it is where an honest post earns trust. The 2025 meta-analysis is good evidence, but it is not the final word.

• The walking-distance figure is from a subset. The 77.95 meter improvement comes only from trials that reported the 6-minute walk test, not from all 37 trials in the review.
• Certainty was low to moderate. Using the GRADE framework, which rates how much confidence we can place in a body of evidence, the certainty across outcomes was low to moderate. That is a signal to hold these results with appropriate caution, not to treat them as settled.
• Breathing exercises alone were not the recommendation. The review authors favor combining breathing exercises with multicomponent rehabilitation (strength and aerobic training), not breathing practice on its own.
• No proven fatigue benefit. The breathing-exercise subgroup did not show a significant improvement in fatigue, one of long COVID's most burdensome symptoms.
• Long COVID is heterogeneous. It is not one condition. It spans breathlessness, fatigue, cognitive difficulty, autonomic problems, and more, and a treatment that helps one cluster of symptoms may do little for another. Pooled averages can hide that variation.

None of this means breathing exercises are not worth doing. It means the accurate claim is modest: they are a low-cost, low-risk adjunct with genuine support for walking capacity, lung function, and quality of life, and no proven effect on fatigue.

How should someone actually start?

Given the evidence and the caveats, a sensible, honest path looks like this:

1. Talk to a clinician first, especially if you have post-exertional malaise, chest pain, or a known heart or lung condition. Breathing exercises are an adjunct to medical care, not a replacement for it.
2. Ask about pulmonary rehabilitation. The strongest results in the research come from structured, multicomponent programs, not breathing alone.
3. Begin gently. Start with short sessions of diaphragmatic and pursed-lip breathing, keep the effort low, and pace yourself.
4. Track how you respond. Notice whether a session leaves you calmer or more drained, and adjust. If symptoms flare afterward, that is information, not failure.

Frequently asked questions

Can breathing exercises cure long COVID?

No. There is no evidence that breathing exercises cure long COVID. The 2025 meta-analysis by Li et al. found they can improve walking capacity, lung function (FEV1 and FVC), and quality of life, but they are best used as one part of a broader rehabilitation program, and they did not significantly reduce fatigue.

Do breathing exercises help with long COVID fatigue?

The current evidence does not support it. In Li et al. 2025, the breathing-exercise subgroup showed no significant benefit for fatigue, even though it improved other outcomes. If fatigue is your main symptom, discuss a paced, whole-program approach with a clinician rather than relying on breathing exercises alone.

Which breathing exercises are used in pulmonary rehab for COVID recovery?

The most common are diaphragmatic breathing (to restore efficient, belly-driven breathing), pursed-lip breathing (to ease breathlessness by keeping airways open on the exhale), and paced or slow breathing (to calm the nervous system and reduce air hunger).

How strong is the evidence for breathing exercises in long COVID?

It is moderate at best. The 2025 systematic review and meta-analysis pooled 37 randomized controlled trials (N=3,363), but GRADE certainty was low to moderate, and the standout walking-distance result came from the subset of trials that measured it. The findings are encouraging and worth acting on cautiously, not conclusive.

Is it safe to do breathing exercises if I have post-exertional malaise?

Usually, if you keep the effort low and pace yourself, but check with a clinician first. Breathing exercises are gentle, yet post-exertional malaise means even mild effort can trigger a delayed crash. Start small, stop if symptoms worsen, and work with a provider who understands the condition.

If breathlessness or a shallow, anxious breathing pattern is part of your recovery, learning to breathe with your diaphragm and to pace a slow, even breath is a low-cost skill worth building, ideally alongside guided rehabilitation. A guided practice can make the pacing easier to feel and easier to keep up with, which is often the hardest part. Whatever tool you use, the goal is the same: a calmer, more efficient breath that you can return to on the hard days.

This article is educational and not medical advice. Long COVID is a serious, individual condition. Please work with your doctor or a pulmonary rehabilitation program before starting a new breathing or exercise routine, particularly if you experience post-exertional malaise, chest pain, or a heart or lung condition.